As they say;
If you fail to plan, plan to fail.
However, planning is subject to life--and life happens!
One colleague of mine compared it to a sailboat, and our dialogue went something like this:
You set out on a course. But the wind and ocean current takes you here and there. Even as you try to steer the boat with the sails and rudder, sometimes you land on Gilligan's Island!
Hence, life is like a sailboat. ;-)
(Source Photo: Andy Blumenthal)